AMD Radeon 550X vs NVIDIA GeForce GTX 645 OEM
What is the difference between AMD Radeon 550X and NVIDIA GeForce GTX 645 OEM. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Lexa | GPU Name | GK106 |
| Lexa PRO (215-0904018) | Model number | GK106-200-A1 |
| GCN 4.0 | Architecture | Kepler |
| GlobalFoundries | Foundry | TSMC |
| 14 nm | Process Size | 28 nm |
| 2,200 million | Transistors | 2,540 million |
| 103 mm² | Die Size | 221 mm² |
Graphics Card
| Mar 27th, 2019 | Release Date | Apr 22nd, 2013 |
| Polaris (RX 500X) | Family | GeForce 600 |
| Active | Production | End-of-life |
| Polaris | Predecessor | GeForce 500 |
| PCIe 3.0 x8 | Bus Interface | PCIe 3.0 x16 |
Memory
| 2 GB | Memory Size | 1024 MB |
| GDDR5 | Memory Type | GDDR5 |
| 128 bit | Memory Bus | 128 bit |
| 112.0 GB/s | Bandwidth | 64.00 GB/s |
Performance
| 19.49 GPixel/s | Pixel fillrate | 9.888 GPixel/s |
| 38.98 GTexel/s | Texture fillrate | 39.55 GTexel/s |
| 1,247 GFLOPS | FP32 (float) performance | 949.2 GFLOPS |
| 77.95 GFLOPS (1:16) | FP64 (double) performance | 39.55 GFLOPS (1:24) |
Clock Speeds
| 1750 MHz 7 Gbps effective | Memory Clock | 1000 MHz 4 Gbps effective |
Render Config
| 512 | Shading Units | 576 |
| 32 | TMUs | 48 |
| 16 | ROPs | 16 |
| 16 KB (per CU) | L1 Cache | 16 KB (per SMX) |
| 512 KB | L2 Cache | 256 KB |
Board Design
| Dual-slot | Slot Width | Single-slot |
| 145 mm 5.7 inches | Length | 147 mm 5.8 inches |
| 50 W | Thermal design power (TDP) | 65 W |
| 250 W | Suggested PSU | 250 W |
| 1x DVI 1x HDMI 1x DisplayPort | Display Connectors | 1x DVI 1x HDMI 1x DisplayPort |
| None | Power Connectors | None |
| D090 | Board Number | P2010 SKU 20 |
API support
| 12 (12_0) | DirectX | 12 (11_0) |
| 4.6 | OpenGL | 4.6 |
| 2.1 | OpenCL | 3.0 |
| 1.2 | Vulkan | 1.1 |
| 6.4 | Shader Model | 5.1 |